CN102959198B - Waste heat recovery plant - Google Patents
Waste heat recovery plant Download PDFInfo
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- CN102959198B CN102959198B CN201180032647.7A CN201180032647A CN102959198B CN 102959198 B CN102959198 B CN 102959198B CN 201180032647 A CN201180032647 A CN 201180032647A CN 102959198 B CN102959198 B CN 102959198B
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- turbine
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- generator
- rotating speed
- inverter
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- 238000011084 recovery Methods 0.000 title claims abstract description 10
- 239000002918 waste heat Substances 0.000 title claims abstract description 10
- 230000005611 electricity Effects 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 7
- 238000009499 grossing Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000010248 power generation Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 16
- 239000002912 waste gas Substances 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000005452 bending Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
- F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/04—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using kinetic energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/32—Engines with pumps other than of reciprocating-piston type
- F02B33/34—Engines with pumps other than of reciprocating-piston type with rotary pumps
- F02B33/40—Engines with pumps other than of reciprocating-piston type with rotary pumps of non-positive-displacement type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Supercharger (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Possess by the waste heat recovery plant of the compressor (8) of exhaust-driven turbine (1) and pressurized gas, possess: generator (2), carry out power generation by the rotation of turbine (1); Motor (7), rotary actuation compressor (8); And control gear (17), the drive motor (7) using the electric power generated electricity by generator (2) as power source.
Description
Technical field
The present invention relates to the waste heat recovery plant used by the device with heat engine or thermal cycle.
Background technique
In order to effectively utilize used heat in heat engine or thermal cycle, being kinetic energy by turbine by the thermal power transfer contained by waste gas, utilizing this kinetic energy to improve supply gas pressure to drive compressor.As representational device for this reason, there is turbocharger, such as, the turbocharger described in known patent document 1.
Invention described in patent documentation 1 is the invention about trouble-shooter, whether correctly this trouble-shooter is equivalent to the operation or whether normally obtain the running-active status of the systems such as the rotating speed of turbine of the accelerator tread-on quantity of engine loading signal, the position etc. being supplied to the fuel rod of motor, each several part in order to detect, be provided with the detection facility for each several part.
Patent documentation 1: Japanese Unexamined Patent Publication 1-121514 publication, " trouble-shooter with the turbocharger of electric rotating machine ".
Summary of the invention
The problem that invention will solve
Existing turbocharger is as described in Patent Document 1 generally that turbine and compressor are linked as the structure integrally rotated by shaft mechanical.
, usually, the rotating speed of turbocharger is high (rotating to more than tens thousand of times for tens thousand of times), thus in order to prevent the vibration of axle, is necessary to shorten axle as much as possible.Therefore, for the pipe arrangement to turbine guiding waste gas with for guiding the pipe arrangement of air feed long and bending to compressor.Therefore, the pressure loss of pipe arrangement becomes large, and pipe arrangement itself also occupies large place.
In addition, mostly thermoinsulation material is wound in pipe arrangement, but the many and artificial also large problem points that is wound insulation material in bending pipe arrangement of the necessary amount that there is thermoinsulation material.
And because turbine rotates with identical rotating speed with compressor, the side that thus there is likely turbine or compressor operates and the problem points of decrease in efficiency under the condition that fluid property is not best.
The present invention puts in view of the above-mentioned problems and invents.That is, the object of the invention is to, provide to shorten and guide the pipe arrangement of waste gas and for guiding the length of the pipe arrangement of air feed to compressor and making the both sides of turbine and compressor and best consistent the waste heat recovery plant operated of fluid property to turbine.
For solving the means of problem
A kind of waste heat recovery plant is provided, it is characterized in that: be possess the waste heat recovery plant by the compressor of exhaust-driven turbine and pressurized gas, possess:
Generator, carries out power generation by the rotation of described turbine;
Motor, compressor described in rotary actuation; And
Control gear, drives described motor using described electric power as power source.
In addition, according to the present invention, described control gear, possesses:
Rectifier, exports rectification by the interchange from described generator and converts direct current to;
Smoothing circuit, makes immediately preceding the VDC after this rectifier level and smooth;
DC bus, carries described electric power to described compressor side from described turbo-side;
Inverter, drives described motor;
Revolution detector, detects the rotating speed of described turbine and described generator;
Voltage detector, detects the voltage of described DC bus; And
Rotary speed instruction device, exports the rotational speed command value of the described motor calculated based on described rotating speed and described voltage and described compressor to described inverter.
In addition, according to another embodiment, described control gear, possesses:
Rectifier, exports rectification by the interchange from described generator and converts direct current to;
Smoothing circuit, makes immediately preceding the VDC after this rectifier level and smooth;
DC bus, carries described electric power to described compressor side from described turbo-side;
Inverter, drives described motor;
Revolution detector, detects the rotating speed of described turbine and described generator;
DC electrical source, supplies an electric current to described DC bus;
Diode, when the generating voltage from described turbine and described generator be not content with described inverter can carry out the voltage of action, by described electric current supply to this inverter; And
Rotary speed instruction device, exports the rotational speed command value of the described motor calculated based on described rotating speed and described compressor to described inverter.
In addition, according to the present invention, for turbine described in 1 group and described generator, motor described in multiple stage and described compressor are set.
The effect of invention
According to the invention described above, owing to passing through that turbine and compressor are divided into two in mechanism, thus can at random configure turbine and compressor, thus can shorten the pipe arrangement of waste gas and air feed and make the pipe arrangement of waste gas and air feed become straight line.In addition, because the rotating speed of turbine and compressor also can be different, thus the both sides of turbine and compressor can be operated under the condition that fluid property is best.
Accompanying drawing explanation
Fig. 1 is the figure of the turbocharger of embodiment 1 in the present invention;
Fig. 2 is the figure of the turbocharger of embodiment 2 in the present invention;
Fig. 3 is the figure of the turbocharger of embodiment 3 in the present invention;
Fig. 4 is the figure of the turbocharger of embodiment 4 in the present invention.
Description of reference numerals
1 turbine; 1a axle; 2 generators; 3 rectifiers; 4 smoothing circuit; 5 DC buss; 6 inverters; 7 motor; 8 compressors; 8a axle; 11 revolution detectors; 12 voltage detectors; 13 rotary speed instruction devices; 13a rotary speed instruction device; The rotating speed of 14 turbines and generator; 15 voltages; 16 rotational speed command value; 16a rotational speed command value; 17 control gear; 21 DC electrical source; 22 diodes; 33 rotary speed instruction devices; 33a rotary speed instruction device; 36 inverters; 37 motor; 38 compressors; 38a axle; 46 rotational speed command value; 46a rotational speed command value.
Embodiment
Below, with reference to accompanying drawing, preferred embodiment of the present invention is described.In addition, the symbol identical to portion markings common in each figure, the repetitive description thereof will be omitted.
Fig. 1 is the figure of the embodiment 1 in the present application.
In the figure, 1 is turbine, and 1a is axle, 2 is generators, and 3 is rectifiers, and 4 is smoothing circuit, 5 is DC buss, and 6 is inverters, and 7 is motor, 8 is compressors, and 8a is axle, and 11 is revolution detectors, 12 is voltage detectors, and 13 is rotary speed instruction devices, and 14 is rotating speeds, 15 is voltage, and 16 is rotational speed command value, and 17 is control gear.
By axle 1a, generator 2 and the turbine 1 rotated by the waste gas from heat engine (not shown) are directly linked.And generator 2 and turbine 1 become and integrally rotate, and carry out power generation.
Such as, can use using the permanent magnet synchronous motor driven by three phase current as generator 2.
Control gear 17 using the electric power generated electricity by generator 2 as power source, drive motor 7.In addition, the control gear 17 of the present embodiment possesses rectifier 3, smoothing circuit 4, DC bus 5, inverter 6, revolution detector 11, voltage detector 12 and rotary speed instruction device 13.
The interchange of rectifier 3 self generator 2 in future exports rectification and converts direct current to.
Such as, rectifier 3 is made up of diode bridge etc.
Owing to there is pulsation (ripple) in immediately preceding the VDC after rectifier 3, thus smoothing circuit 4 smoothing.
Such as, smoothing circuit 4 is made up of reactor and capacitor.
The electric power generated electricity by generator 2 is carried from turbine 1 lateral compression machine 8 side by DC bus 5.
Such as, DC bus 5 is made up of the bus of cable and the conductor such as copper, aluminium.
Inverter 6 according to the rotational speed command value 16 from rotary speed instruction device 13 with variable speed drive motor 7.
Such as, inverter 6 pairs of power control components such as IGBT or power MOSFET carry out PWM, preferably as the formation of voltage-type or current source inverter.
Or, as with the method for variable speed drive motor 7, also can carry out ensorless control, also can be detected the rotation of motor 7 by encoder or rotary transformer and be carried out vector control.
By axle 8a, motor 7 and the compressor 8 of compression to the air feed of heat engine (not shown) are directly linked, become the formation that compressor 8 also rotates together when motor 7 rotates.
Such as, motor 7 is made up of the induction motor utilizing three phase current to drive or permanent magnet synchronous motor.
Revolution detector 11 detects the rotating speed 14 of turbine 1 and generator 2.
Such as, as revolution detector 11, use the tachometer generator or the encoder that are located at the axle 1a of turbine 1 and generator 2.
When revolution detector 11 is encoders, time diffusion is carried out to the angle of swing detected by encoder and is transformed into rotating speed 14.
Voltage detector 12 detects the voltage of positive and negative of the voltage 15(of the side close to inverter 6 of DC bus 5).
The rotational speed command value 16 of motor 7 and compressor 8 exports to inverter 6 based on the rotating speed 14 of the turbine 1 detected by revolution detector 11 and generator 2 and the voltage 15 of DC bus 5 that detected by voltage detector 12 by rotary speed instruction device 13.
Rotary speed instruction device 13 can be made up of such as microprocessor, storage and operation program.
Rotary speed instruction device 13 is configured to, and generates rotational speed command value 16 as follows.
(1) when " voltage 15 detected by voltage detector 12 " is lower than " inverter 6 can carry out the minimum voltage of action ", rotational speed command value 16 is set to 0.
(2) when " voltage 15 detected by voltage detector 12 " is identical or higher with " inverter 6 can carry out the minimum voltage of action ", rotational speed command value 16 is set as the value obtained by " rotating speed 14 detected by revolution detector 11 " × coefficient.
At this, such as, in fluid property, if efficiency is good when making the rotating speed 14 of the rotating speed of compressor 8 and turbine 1 equal, then coefficient is set to 1, such as, in fluid property, if efficiency is good when the rotating speed of compressor 8 being set to 2 times of rotating speed 14 of turbine 1, then coefficient is set to 2.Or, such as, in fluid property, if efficiency is good when the rotating speed of compressor 8 being set to 0.8 times of rotating speed 14 of turbine 1, then coefficient is set to 0.8.
That is, the ratio of the rotating speed of compressor 8 best for efficiency in fluid property and the rotating speed 14 of turbine 1 is set to coefficient.
By above-mentioned formation, thus when heat engine (not shown) does not carry out action, owing to there is no waste gas, thus turbine 1 non rotating.Therefore, the generator 2 also non rotating coaxial with turbine 1, the voltage of DC bus 5 is 0.So because " voltage 15 detected by voltage detector 12 " is lower than " inverter 6 can carry out the minimum voltage of action ", thus rotational speed command value 16 becomes 0, motor 7 non rotating, the compressor 8 also non rotating coaxial with motor 7.
On the other hand, when heat engine (not shown) carries out action, produce waste gas, turbine 1 rotates.Thus, the generator 2 coaxial with turbine 1 also rotates, the voltage rise of DC bus 5.If " voltage 15 detected by voltage detector 12 " exceedes " minimum voltage that inverter 6 can carry out action ", so, rotational speed command value 16 is not zero, and by the vector control in inverter 6, thus motor 7 rotates with the rotating speed corresponding to rotational speed command value 16.And the compressor 8 coaxial with motor 7 also rotates, and compresses the air feed to heat engine.
Because rotational speed command value 16 is proportional with the rotating speed 14 detected by revolution detector 11, if thus turbine 1 low speed rotation, then compressor 8 is also with low speed rotation, if turbine 1 High Rotation Speed, then compressor 8 is also with High Rotation Speed.Therefore, when heat engine (not shown) carries out action, become the action same with existing turbocharger turbine and compressor directly linked by axle.
And, due to using rotational speed command value 16 as " rotating speed 14 detected by revolution detector 11 " × coefficient, thus in fluid property, when expect the ratio of the rotating speed 14 of turbine 1 and the rotating speed of compressor 8 to be set to such as X doubly, can operate in the X mode doubly by making the rotating speed of compressor 8 become the rotating speed 14 of turbine 1 in advance using the value of coefficient as X.
Fig. 2 is the figure of the turbocharger of embodiment 2 in the present invention.
In the figure, 13a is rotary speed instruction device, and 16a is rotational speed command value, and 21 is DC electrical source, and 22 is diodes.The number identical with Fig. 1 is marked to the constituting component identical with embodiment 1 and omits the description.
Control gear 17 using the electric power generated electricity by generator 2 as power source, drive motor 7.In addition, the control gear 17 of the present embodiment possesses rectifier 3, smoothing circuit 4, DC bus 5, inverter 6, revolution detector 11, rotary speed instruction device 13a, DC electrical source 21 and diode 22.
Rotary speed instruction device 13a based on the turbine 1 detected by revolution detector 11 and generator 2 rotating speed 14 and the command value 16a of the rotating speed of motor 7 and compressor 8 is exported to inverter 6.
DC electrical source 21 supplies the voltage larger than " inverter 6 can carry out the minimum voltage of action ".
Such as, also can use secondary cell or electric double layer capacitor, also can be the formation of commercial ac power source being carried out to rectification, smoothing and constant voltage.
Diode 22, only when the generating voltage of turbine 1 and generator 2 is low, electric current is supplied to DC bus 5 from DC electrical source 21, when obtaining enough generating voltages by turbine 1 and generator 2, automatically switches to and electric current is supplied to DC bus 5 from generator 2.
Owing to DC electrical source 21 being connected as illustrated in fig. 2 with diode 22, thus all the time the voltage more than " inverter 6 can carry out the minimum voltage of action " is applied to DC bus 5, inverter 6 can carry out action all the time.
Rotary speed instruction device 13a is configured to, and generates rotational speed command value 16a as follows.
(1) when " rotating speed 14 detected by revolution detector 11 " specific ray constant R1 is less, rotational speed command value 16a is set to constant R2.
(2) when " rotating speed 14 detected by revolution detector 11 " is identical with constant R1 or higher, rotational speed command value 16a is set as " rotating speed 14 detected by revolution detector 11 " × coefficient.
At this, constant R1 is equivalent under the state of heat engine (not shown) idling, and the generator 2 coaxial with turbine 1 carries out the rotating speed 14 of the turbine 1 of the state generated electricity hardly.Constant R2 is the rotating speed in order to carry out the compressor 8 that MIN air feed needs.
In addition, above-mentioned coefficient is obtained similarly to Example 1.
By above-mentioned formation, thus when heat engine does not carry out action or heat engine carry out action but the state of idling time, because waste gas is few, the rotating speed 14 of turbine 1 is low, thus meet " ' situation that rotating speed 14 ' the specific ray constant R1 detected by revolution detector 11 is less ", rotational speed command value 16a becomes constant R2, and compressor 8 only carries out MIN air feed.Owing to carrying out the generating from the generator 2 coaxial with turbine 1 hardly, thus electric current flows into DC bus 5 from DC electrical source 21 via diode 22, drives inverter 6.
On the other hand, when heat engine is carried out action and is carried out load operation, because waste gas is many, the rotating speed 14 of turbine 1 is high, thus meet " situation that " rotating speed 14 detected by revolution detector 11 " is identical or higher with constant R1 ", therefore become the action identical with the situation of " when heat engine carries out action " in embodiment 1.
Even if embodiment 2 is particularly suitable for the situation also wanting when the frequency of heat engine idle running or stopping is high air feed to be maintained bottom line (not wanting to stop compressor 8).
Fig. 3 is the figure of the turbocharger of embodiment 3 in the present invention.
In the figure, 33 is rotary speed instruction devices, and 36 is inverters, and 37 is motor, and 38 is compressors, and 38a is axle.The number identical with Fig. 1 is marked to the constituting component identical with embodiment 1 and omits the description.
Control gear 17 using the electric power generated electricity by generator 2 as power source, drive motor 7,37.In addition, the control gear 17 of the present embodiment possess rectifier 3, smoothing circuit 4, DC bus 5, inverter 6,36, revolution detector 11, voltage detector 12 and rotary speed instruction device 33.
Rotary speed instruction device 33 based on the rotating speed 14 of the turbine 1 detected by revolution detector 11 and generator 2 and the voltage of DC bus 5 that detected by voltage detector 12 and for motor, compressor and inverter multiple groups each and the command value of the rotating speed of motor and compressor is exported to inverter.That is, the command value 16 of the rotating speed of motor 7 and compressor 8 is exported to inverter 6, the command value 46 of the rotating speed of motor 37 and compressor 38 is exported to inverter 36.
Rotary speed instruction device 33 can be made up of such as microprocessor, storage and operation program.
Inverter 36, motor 37, compressor 38 and axle 38a are the mechanisms identical with the inverter 6 in embodiment 1 or embodiment 2, motor 7, compressor 8 and axle 8a.Size, shape or rotating speed also can be different.
In this embodiment, become such formation: for 1 group of turbine 1 and generator 2, prepare to compress the multiple compressors 8,38 to the air-breathing of the heat engine or thermal cycle (not shown) that are divided into multiple stage or multiple part and motor 7,37, the electric power generated electricity by generator 2 is electrically connected to multiple motors 7,37.
Rotary speed instruction device 33 is configured to, and generates rotational speed command value 16 as follows.
(1) when " voltage 15 detected by voltage detector 12 " is lower than " inverter 6 can carry out the minimum voltage of action ", rotational speed command value 16 is set to 0.
(2) when " voltage 15 detected by voltage detector 12 " is identical or higher with " inverter 6 can carry out the minimum voltage of action ", rotational speed command value 16 is set as the value obtained by " rotating speed 14 detected by revolution detector 11 " × coefficient A.
At this, such as, in fluid property, if efficiency is good when making the rotating speed 14 of the rotating speed of compressor 8 and turbine 1 equal, then coefficient A is set to 1, such as, in fluid property, if efficiency is good when the rotating speed of compressor 8 being set to 2 times of rotating speed 14 of turbine 1, then coefficient A is set to 2.Or, such as, in fluid property, if efficiency is good when the rotating speed of compressor 8 being set to 0.8 times of rotating speed 14 of turbine 1, then coefficient A is set to 0.8.
That is, the ratio of the rotating speed of compressor 8 best for efficiency in fluid property and the rotating speed 14 of turbine 1 is set to coefficient A.
And rotary speed instruction device 33 is configured to, generate rotational speed command value 46 as follows.
(1) when " voltage 15 detected by voltage detector 12 " is lower than " inverter 36 can carry out the minimum voltage of action ", rotational speed command value 46 is set to 0.
(2) when " voltage 15 detected by voltage detector 12 " is identical or higher with " inverter 36 can carry out the minimum voltage of action ", rotational speed command value 46 is set as the value obtained by " rotating speed 14 detected by revolution detector 11 " × coefficient B.
At this, such as, in fluid property, if efficiency is good when making the rotating speed 14 of the rotating speed of compressor 38 and turbine 1 equal, then coefficient B is set to 1, such as, in fluid property, if efficiency is good when the rotating speed of compressor 38 being set to 2 times of rotating speed 14 of turbine 1, then coefficient B is set to 2.Or, such as, in fluid property, if efficiency is good when the rotating speed of compressor 38 being set to 0.8 times of rotating speed 14 of turbine 1, then coefficient B is set to 0.8.
That is, the ratio of the rotating speed of compressor 38 best for efficiency in fluid property and the rotating speed 14 of turbine 1 is set to coefficient B.
On the other hand, Fig. 4 is the figure of the turbocharger of embodiment 4 in the present invention.
In the figure, 33a is rotary speed instruction device.The number identical with Fig. 2 or Fig. 3 is marked to the constituting component identical with embodiment 2 or embodiment 3 and omits the description.
Control gear 17 using the electric power generated electricity by generator 2 as power source, drive motor 7,37.In addition, the control gear 17 of the present embodiment possess rectifier 3, smoothing circuit 4, DC bus 5, inverter 6,36, revolution detector 11, rotary speed instruction device 33a, DC electrical source 21 and diode 22.
Rotary speed instruction device 33a based on the turbine 1 detected by revolution detector 11 and generator 2 rotating speed 14 and for motor, compressor and inverter multiple groups each and the command value of the rotating speed of motor and compressor is exported to inverter.That is, the command value 16a of the rotating speed of motor 7 and compressor 8 is exported to inverter 6, the command value 46a of the rotating speed of motor 37 and compressor 38 is exported to inverter 36.
Rotary speed instruction device 33a is configured to, and generates rotational speed command value 16a as follows.
(1) when " rotating speed 14 detected by revolution detector 11 " specific ray constant R1 is less, rotational speed command value 16a is set to constant R2A.
(2) when " rotating speed 14 detected by revolution detector 11 " is identical with constant R1 or higher, rotational speed command value 16a is set as " rotating speed 14 detected by revolution detector 11 " × coefficient A.
At this, constant R2A is the rotating speed in order to carry out the compressor 8 that MIN air feed needs.
And rotary speed instruction device 33a is configured to, generate rotational speed command value 46a as follows.
(1) when " rotating speed 14 detected by revolution detector 11 " specific ray constant R1 is less, rotational speed command value 46a is set to constant R2B.
(2) when " rotating speed 14 detected by revolution detector 11 " is identical with constant R1 or higher, rotational speed command value 46a is set as " rotating speed 14 detected by revolution detector 11 " × coefficient B.
At this, constant R2B is the rotating speed in order to carry out the compressor 38 that MIN air feed needs.
In addition, obtain above-mentioned constant R1 in the same manner as above-described embodiment 2, obtain coefficient A, coefficient B similarly to Example 3.
In above-described embodiment 3 and embodiment 4, the waste gas that the waste gas from the heat engine or thermal cycle that are divided into multiple stage or multiple part mixes is driven turbine 1 all the time, there is no need for the connecting tube of the uneven countermeasure of waste gas.
In addition, such as, when arranging common emission-control equipment in order to response environment restriction for the heat engine or thermal cycle that are divided into multiple stage or multiple part, passing through pipe arrangement by the waste gas of the high pressure before turbine, thus obtaining the effect that pipe arrangement is enough thin.
In addition, in the present invention, due to distance between turbine 1 and compressor 8, in order to the current potential reduced in electric wire declines, also can immediately preceding adding booster type dc-dc after smoothing circuit 4 by boost in voltage.
In addition, in order to prevent overvoltage, also can be configured to, positive and negative at DC bus 5 adds regeneration resistance via contactor, when the voltage of DC bus 5 exceedes the input allowable voltage of inverter 6, closes contactor.
The zero cross point that also can export the interchange of generator 2 counts and carries out the Rotating speed measring of turbine 1 and generator 2.In addition, in this case, external tachometer generator or encoder is not needed.
In addition, in embodiment 3 and embodiment 4, the example of the group with 2 groups of motor, compressor and inverters is shown, but more than 3 groups, also can is same formation.
In addition, certainly, the present invention is not limited to above-mentioned mode of execution, in the scope not departing from main idea of the present invention, can add various change.
Claims (3)
1. a waste heat recovery plant, possesses: turbine, by exhaust gas driven; Compressor, separates and pressurized gas with this turbine in mechanism; Generator, is generated electricity by the rotation of described turbine; Motor, compressor described in rotary actuation; And control gear, possess and the interchange from described generator is exported rectification and converts the rectifier of direct current to, this control gear exports using the generating of described generator and drives described motor as power source, it is characterized in that,
Described control gear, also possesses:
Smoothing circuit, makes immediately VDC after the rectifier level and smooth;
DC bus, carries electric power to compressor side from turbo-side;
Inverter, this inverter is supplied to electric power from described generator by described rectifier, described smoothing circuit and described DC bus, drives described motor using this electric power as power source;
Revolution detector, detects the rotating speed of described turbine and described generator;
Voltage detector, detects described VDC; And
Rotary speed instruction device, exports the rotational speed command value of the described motor calculated based on described rotating speed and described VDC and described compressor to described inverter,
Described rotational speed command value, when described inverter can carry out more than the minimum voltage of action, is set as the value obtained by " the described rotating speed detected by described revolution detector " × coefficient by the described VDC detected by described voltage detector.
2. a waste heat recovery plant, possesses: turbine, by exhaust gas driven; Compressor, separates and pressurized gas with this turbine in mechanism; Generator, is generated electricity by the rotation of described turbine; Motor, compressor described in rotary actuation; And control gear, possess and the interchange from described generator is exported rectification and converts the rectifier of direct current to, this control gear exports using the generating of described generator and drives described motor as power source, it is characterized in that,
Described control gear, also possesses:
Smoothing circuit, makes immediately preceding the VDC after this rectifier level and smooth;
DC bus, carries electric power to compressor side from turbo-side;
Inverter, is supplied to electric power from described generator by described rectifier, described smoothing circuit and described DC bus, drives described motor using this electric power as power source;
Revolution detector, detects the rotating speed of described turbine and described generator;
DC electrical source;
Diode, when the generating voltage from described turbine and described generator be not content with described inverter can carry out the voltage of action, by the electric current supply from described DC electrical source to this inverter; And
Rotary speed instruction device, exports the rotational speed command value of the described motor calculated based on described rotating speed and described compressor to described inverter,
This rotary speed instruction device,
When the described rotating speed detected by described revolution detector is more than constant R1, described rotational speed command value is set as " the described rotating speed detected by described revolution detector " × coefficient.
3. waste heat recovery plant as claimed in claim 1 or 2, is characterized in that,
For turbine described in 1 group and described generator, motor described in multiple stage and described compressor are set.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010155456A JP5700237B2 (en) | 2010-07-08 | 2010-07-08 | Waste heat recovery device |
| JP2010-155456 | 2010-07-08 | ||
| PCT/JP2011/060066 WO2012005046A1 (en) | 2010-07-08 | 2011-04-25 | Waste heat recovery device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102959198A CN102959198A (en) | 2013-03-06 |
| CN102959198B true CN102959198B (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180032647.7A Active CN102959198B (en) | 2010-07-08 | 2011-04-25 | Waste heat recovery plant |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9109503B2 (en) |
| EP (1) | EP2592249B1 (en) |
| JP (1) | JP5700237B2 (en) |
| CN (1) | CN102959198B (en) |
| WO (1) | WO2012005046A1 (en) |
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| JP6272077B2 (en) * | 2014-02-25 | 2018-01-31 | 三菱重工業株式会社 | Turbocharger and ship |
| JP6282487B2 (en) * | 2014-02-25 | 2018-02-21 | 三菱重工業株式会社 | Turbocharger and ship |
| US20160138463A1 (en) * | 2014-11-17 | 2016-05-19 | Arnold Magnetic Technologies | System and method for providing multiple voltage buses on a single vehicle |
| JP6287979B2 (en) * | 2015-07-01 | 2018-03-07 | トヨタ自動車株式会社 | Control device for internal combustion engine |
| WO2018084309A1 (en) * | 2016-11-07 | 2018-05-11 | 株式会社Ihi | Exhaust gas energy recovery device |
| JP7179492B2 (en) | 2018-05-25 | 2022-11-29 | 三菱重工業株式会社 | supercharging system |
| TR201819786A2 (en) * | 2018-12-19 | 2020-07-21 | Supsan Motor Supaplari Sanayii Ve Ticaret A S | RANGE EXTENSION SYSTEM WITH A MICRO GAS TURBINE WHICH IS INCREASED EFFICIENCY BY THE COMPRESSOR AND TURBINE ON SEPARATE SHAFTS AND THEIR OPERATION METHOD |
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| Publication number | Publication date |
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| US9109503B2 (en) | 2015-08-18 |
| US20130098034A1 (en) | 2013-04-25 |
| EP2592249A1 (en) | 2013-05-15 |
| JP2012017685A (en) | 2012-01-26 |
| JP5700237B2 (en) | 2015-04-15 |
| WO2012005046A1 (en) | 2012-01-12 |
| CN102959198A (en) | 2013-03-06 |
| EP2592249B1 (en) | 2020-11-25 |
| EP2592249A4 (en) | 2017-06-14 |
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